Home / 385,308.52-531,706.91-213,223.41

Finding the Fourth Proportional to 385,308.52, 531,706.91 and 213,223.41

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Solution

The fourth proportional to 385,308.52, 531,706.91 and 213,223.41 is: 294,237.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,308.52 : 531,706.91 = 213,223.41 : x
  2. Step 2: Convert to fraction form
    385,308.52/531,706.91 = 213,223.41/x
  3. Step 3: Cross multiply
    385,308.52x = 531,706.91 × 213,223.41
  4. Step 4: Simplify right side
    385,308.52x = 113,372,359,404.65
  5. Step 5: Solve for x
    x = 113,372,359,404.65/385,308.52
  6. Step 6: Final answer
    x = 294,237.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.